Section insulator



July 26, 1932. Q w 5o 1,868,619

SECTION :INSULATOR Filed Feb. 11. 1929- I 10 g o I p], i 0 Jr? o .M IHWI I wh p x 0 36 0 5D Hm Q o o (9 if W Patented July 26, 1932 A UNITED STATES PATENT OFFICE I CHARLES E. WATSON, OF CHICAGO, ILLINOIS, ASSIGNOR T GEORGE W. SGHROEDER, .j 0F IBER-WYN, ILLINOIS SECTION INSULATOR Application filed February 11, 1929. Serial No.'339,059.

My invention relates to supports or section insulators for conductors and more particularly, to a class of supports by means of which the. adjacent ends of two trolley sections are held in fixed but insulated relation to each other. j

One of the primary objects of the present invention is to provide a novel and improved section insulator in which the metal runners 110 and insulated runner thereof, may be readily removedtherefrom when necessity reqmres, without disconnecting either of the adjacent ends of the live wire from the section.

A further object of the invention ism provide a novel and improvedform of a section insulator in which the removable metal runner thereof is so constructed and connected with the insulated runner that the arc caused by the trolley passing over the section is carried along'on an upper portion of the'meta'l 1 runner and thereby reduces the burning effect of this arc, both on the metal runner and insulated runner, to such an extent that the necessity for repair is reduced to a minimum. A 'still further object of the invention is to provide a novel and improved construction of a section insulator and more particularly the removable metal runner in which the runnerextends longitudinally around and below the adjacent end of the live wire connected to the body of the section so as to eliminate the burning of the adjacent end of the live wire and protect the same as far as possible, andthereby permit the: repair ofthe section without impairing or stopping the service of the trolley wire.

A still further object of the invention is to provide a novel and improved form of sec 4b tion insulator in which the metal runner thereof may be quickly and easily attached thereto or detached therefrom. These and other objects are accomplished by providing construction and an arrange .1 mentof the various parts in the manner hereinafter described and particularly pointed V out in the appended claims.

Referring to the drawing, Fig. 1 is a side 'elevational view of my improved section insulator wlth'one end portion thereof, shown in cross section illustrating the manner in which the wire is mounted in the removable runner and end bracket of'the section.

Fig. 2 is a top plan view of the same.

Fig. 3 is an enlargedend elevational view.

Fig. 5 is a detailed view of the insulating block or section.

Fig. 6 is a side elevational view of'the removable insulated runner.

Fig. 7 is an end elevational view'ofthe 7 same, and t Fig. 8 is a top plan view of one of the removable metal runners.- Heretofore, considerable delay in the operation of the. service and inconvenience occurs when it becomes necessary to install a new insulated section in the service line when one of these sections have become burnt out because'lt was'necessary to dlSCOIlIlBCtthB service lines during such installations to in- V part substituted for the burnt out parts without the necessity of disconnecting the terminal adjacent the ends of the live wire and Without delaying or interrupting the service.

In illustrating one form of my invention, I have shown the same ascomprisinga section block .10'which is made preferably of any strong form of insulating material such as bakelite or wood. Secured to the block or section '10 at the oppositeendsthereof, and

by means ofrivets 11, are bracketslQ. These I brackets 12 are provided with a centrally projecting portion 13 and an inclined aperture 14 extending there through. The upper part of this outwardly projecting portion 13 is U-shaped in form and provided with upwardly extending flanges 15 which are adapted to be peened over on the horizontally extending portion 16 of the live wire or cable 17. The ends of these cables or live wires 17 extend through the apertures and are bent around between the flanges 15 as shown in Fig. 1 and the wire is secured to the brackets 12 by having the upper ends 15 peened over on the wire, as clearly shown in Fig. 3. Extending laterally on the opposite sides oi each of the brackets 12 and formed integrally therewith are two laterally projecting apertured ears 18 which are adapted to receive bolts 19 for securing the metal removable runners 2O thereto in the manner hereinafter described.

These metal runners 20 are removably secured to each of the brackets 12 by having spaced apart arms 21 which are provided with internal rectangular sockets 22. These internal sockets 22 are adapted to engage pins 23 extending outwardly from the sides of the brackets which may be formed integrally with the brackets or may be separate pins extending entirely through the brackets and block 10. The inner ends of these removable metal runners 20 are provided with beveled recesses 24: which are adapted to receive a complementary beveled projection 25 on the insulated removable runner 26. The metal runners 20 extend longitudinally of the wire and are gradually reduced in thickness to their outer ends thereof, as shown at 27 and occupy a position below the wire. -A cross section of these metal runners is U-shaped for receiving the wire 17 therein, so that the upper flanges 28 thereof, may be peened on the wire as clearly shown in Fig. 3, for securing the wire therein. This arrangement of havin the removable runner extend a considerable distance longitudinally of the wire adjacent its terminal end, protects the wire from being burnt at a point adjacent the section where the arc appears when the trolley leaves the live wire. In order to prevent the deteriorating effect of the are or the burning of the removable runner, I have purposely offset the arms 21 of each of the runners, as shown at 29, from the lower portion 30 thereof, so that when the sheave of the trolley passes off the lower portion 30, the are caused by the disconnection of the trolley from the metal runner is carried on for a distance on the portion 29 of the arm 21 and reduces the burning effect of these parts. The beveled projections 25 of the removable insulated runner 26 are seated in the beveled recesses 2% of each of the runners and constitute the sole means of supporting the removable insulated runner 26 in position on the insulated section. After the spaced apart arms 21 are adjusted in position on the pins 23 by means of sockets 22 in each of these arms, the runner 20 is positioned or pivoted or swung to a position parallel with the wire and the runner is then secured in the position shown in Fig. 1, by means of the bolts 19 extending through apertured ears 31 formed integrally with the runner and in alignment with the apertured cars 18 01" the bracket. After this has been done, the flanges 28 of the runner, are then peened over the wire in a manner clearly illustrated in Fig. 3.

In the use of the present invention, it will be noted that should either of the metal runners 20 be burnt out or the insulated runner 26 be burnt out, these may be removed by removing the bolts 19 and unfolding the peened flanges 28 from the live wire 27. After one of the runners 20 has been removed, the insulated runner 26 may then be removed and a new one replaced, together with a new metal runner. This can all be accomplished without disconnecting the terminal adjacent ends of the service wires 17 without interruption of service and with the least-possible efiort and labor on the part the parts thereof that are most likely to become deteriorated by the are caused by the trolley sheave, be readily removed without disconnecting the terminal adjacent ends of the service cable. It will also be seen that by my novel construction of removable metal runners, that I have not only protected the terminal ends of the live wire by having the runners embrace the same but have also effected an arrangement of connecting and extending the metal runners at a point along and above the removable insulated runner so that the effect of the arc in deteriorating these parts, is reduced to a minimum.

lVhile in the above specification I have described one embodiment of my invention which may be assumed in practice, it will of course, be understood that the same is capable of modification and that modification may be made without departing from the spirit and scope of the invention as expressed in the following claims.

What I claim as my invention and desire to secure by Letters Patent is:

l. A section insulator comprising an insulated block, brackets secured to the opposite ends of said block, means for peening the terminal ends of two service wires to said brackets, metal conducting runners secured to and extending longitudinally of the lower side of said service wires and means whereby said metal runners may be removed separately from said section.

2. A section insulator comprising a block, brackets secured to the opposite ends of said block, means for securing the terminal adjacent ends of two service wires to said brackets, removable metal runners detachably secured to each of said brackets, said I name to this specification, on this 6th day of February, A. D. 1929.

CHARLES E. WATSON. 

